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SX1231
WIRELESS & SENSING PRODUCTS
DATASHEET
9.2. Listen Mode
9.2.1. Resolutions
On the SX1231 V2a, the Listen mode resolutions were identical for the Idle phase and the Rx phase. They are now
independently configurable, adding flexibility in the setup of the Listen mode.
Figure 47.
Listen Mode Resolutions, V2a
Figure 48. Listen Mode Resolution, V2b
9.2.2. Exiting Listen Mode
In the SX1231 V2a, the following procedure was requested to exit Listen mode:
For all three ListenEnd settings (i.e. even for 00 and 01) disabling Listen mode can be done
anytime by writing all together in a single SPI write command (same register):
?
?
ListenOn to 0
ListenAbort to 1
Mode to the wanted operation mode
Figure 49. Exiting Listen Mode in SX1231 V2a
Listen mode can simply be exited on the SX1231 V2b by resetting bit ListenOn to 0 in RegListen .
9.3. OOK Floor Threshold Default Setting
The following default value modification was required on the V2a silicon:
Figure 50. RegTestOok Description
It is not required to modify this register any more on the SX1231 V2b.
Rev. 7 - June 2013
Page 85
www.semtech.com
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